convert mysql table engine myisam to innodb

#!/bin/bash
if [ $# -ne 1 ]; then
  echo "usage: convert.sh  database"
  exit 1
fi
date
db=$1
echo  "Convert database $db" ;
mysql -B -N -e "SELECT TABLE_NAME, ENGINE FROM information_schema.TABLES where TABLE_SCHEMA = '$db' and engine='myisam'"  |awk '{print $1}'| while read table; \
do \
     echo "+ Converting Table $table"; \
     mysql -B -N -e "alter table $table engine=innodb" $db; \
done;